The woman running ISIS's sexual slavery network, spies and recruitment

Umm Sayyaf was detained by American special forces during a raid in the ISIS-held city of Deir Ezzor in May during which her husband Abu Sayaff was killed and his laptops and phones seized.

Senior defence experts have revealed that Umm Sayyaf has been cooperating with American officials since her capturing and has provided the names and communication details of several senior ISIS commanders, as well as broader operational details.

Women living under ISIS in Syria and Iraq do not hold senior rank within the terror group, but they are privy to secret conversations and take part in operations dependent on the seniority of their husband.

With Abu Sayaff believed to have been ISIS 'oil minister' and therefore the man responsible for bringing a huge chunk of ISIS' £2 million a day income, he was considered a top commander before his death alongside 12 other jihadis in what Pentagon officials described as 'hand-to-hand combat'.

It figures, therefore, that the information Umm Sayyaf has provided American officials with since her capture relates to some of most senior figures within ISIS - possibly even including the extremists' leader, Abu Bakr al-Baghdadi.

Speaking anonymously to the Daily Beast, senior defence officials said: 'Umm Sayyaf had a view from top to bottom [of ISIS]'. They added that so far the jihadi bride had provided details such as names of operatives and revealed the methods the commanders use to communicate. 

Umm Sayyaf, who was found alongside a Yazidi sex slave at the Deir Ezzor property, is also understood to have provided investigators with shocking details of the so-called 'women's networks' within ISIS that deal with recruitment, spying operations and the capture and sale of sex slaves.

One official described Umm Sayyaf as an influential 'senior advisor' within ISIS but said she would not have held the rank of commander, which is only open to men.

The jihadi bride is the most senior female figure to give up the secrets of the depraved terror group, although she is by no means the first.

A large number of women have escaped ISIS and recounted their stories of rape and massacre at the hands of their husbands and male fighters.

Late last month a female jihadi responsible for helping to deliver hundreds of young European girls to ISIS warned young women of the horrifying conditions that await them.

The 23-year-old Syrian woman, understood to have held a senior role within the so-called caliphate, has defected and revealed the inner-workings of the terror group.

The woman – who uses the alias Umm Asma because she fears retaliation – welcomed the young girls who crossed the border from Turkey, and introduced them to life with the black-clad army.

‘You are young,’ she warned European women, in an interview with German newspaper Bild am Sonntag.

‘The caliphate is not what you think it is. Women are whipped, sold and stoned. Corpses are on display publicly for weeks.’

After collected the European girls – most of whom were from the UK, France and Germany – Um Asma took the girls to Raqqa, the ‘capital’ of the Isis caliphate.

She admitted that she sometimes collected as many as 50 new-arrivals at a time and delivered them to the brutal terror group in Syria.

Once the girls had arrived, they received a four-week training course, learning skills such as how to use a firearm, and the study of the Koran.

Wearing a full niqab throughout the interview, covering everything but her eyes, the woman confessed to operating as a member of the female terror group al-Khansa.

(dailymail.co.uk)